Founded in 1987, ESI has wasted no time making a name for itself in the business telecommunications world. Award after award ESI continues to strive in developing ground breaking products with advanced features and ease of use. ESI's IVX series is Liberty's best seller, and there's no secret to its success. Extremely user friendly and loaded with features and functions, the IVX series is offered in five different classes guaranteed to satisfy businesses of every size and demand. View PDF »

Your business and your customers are important, and just because you run a small shop or station doesn't mean you should take a lax approach when it comes to your phone system. This is the precise logic behind ESI's C-Plus telephone system, a series that thrives with big features and functions and built to cater the small business world. View PDF »

The hustle and bustle of the small office can often be a client's nightmare when trying to reach certain contacts. Problem solved – the ESI-50L. Like all ESI systems; the 50L makes it easy to keep in touch. Options such as "off premises reach me" allow those on the move to keep connected with their clients and the main office. Also, the 50L grows as your company grows, and is VOIP ready for future technology, making this system a perfect solution for a growing company on the move. View PDF »

The 50L's big brother is an excellent solution for growing companies with an immediate demand for VoIP. This new addition to ESI's Communications Servers family offers all of the features and functions your company demands with the capability of adding linked remote sites, Remote IP phones for home users, softphones for road warriors, and a complete inter-office VoIP solution. The ESI-50 is a great way to take your company into the VoIP age while maintaining the PBX features and functions you know and love. View PDF »

Picking up right where the ESI-50 leaves off, the ESI-100 is a converged IP and digital system that offers more room for expansion, extra features such as ACD groups, and the same powerful call control that has made ESI the industry leader that it is. If your business is looking for a big solution at competitive pricing, make the easy choice – ESI-100. View PDF »

The ESI-200 is everything you would expect and more in a telephone system. This converged IP and digital system is loaded with tons of features and functions, as well as an extended list of capabilities and programming options. View PDF »

The ESI-600 is a converged IP and digital system loaded with tons all of the features and functions ESI is known for, as well as an extended list of capabilities and programming options, the ESI-600 is the idea solution for large multi-office situations, handling a big system situation with comfort and ease. View PDF »

The biggest gun in the ESI arsenal, the 1000 series takes business communications to a whole new stratosphere. This converged IP and digital system does everything and anything pushing technological boundaries. If it's the latest technology you thrive for buckle up and take the 1000 for a spin – this is one powerful piece of machinery. View PDF »

Take your office calls everywhere and anywhere using ESI's remote IP telephone. Idea for home offices, satellite operations, or road warriors. View PDF »

Want your voicemails emailed directly to your smart-phone? ESI’s Mobile Messaging is the answer, allowing you to keep connected to your voicemail no matter where you travel. View PDF »

Perfect for both heavy cell phone users and headset users ESI's Bluetooth integration works on two separate platforms:
Bluetooth Headset Module The ESI Bluetooth module is perfect if you are currently using a Bluetooth headset for your cell phone, or if you would like an excellent office headset option.
Cell Phone to Desktop Phone Module Constantly finding yourself balancing calls on both you cell phone and office phone? By purchasing ESI's Cell Phone to Desktop Bluetooth module you will be able to route ALL of your calls through your desktop telephone, allowing both office and cell phone calls to be answered at one location - your ESI desktop telephone. View PDF »

ESI's VIP Software makes it easy to check and email voicemails from the comfort of your inbox and provides you with desktop control of your phones keys functions and features. View PDF »

Whether you need a simple outside door box, complete premise control, or even handle your company's time and attendance – when it comes to presence management ESI can do it all. View PDF »

Connection anywhere using your laptop, this PC desktop phone syncs right up to your office telephone system so you never miss a beat or an important call. View PDF »

Constantly find yourself on the go? ESI's cordless telephones make mobility easy. With all the features and functionality of your ESI desk-top telephone, ESI gives you two ways to stay connected - the larger style 9oz 400 feet range phone or the smaller 6oz 150 feet range phone. View PDF »